It works correctly, this is an issue with wrong words used, we`ll fix this in the near future.

I don't think it works at all. I have it set to wood and even though I have the max amount of houses you can have, my wood income never changes from about 5 wood per minute. Also, it shows +0 income for wood from the houses.

Yah after further investigation with it, it shows 0 wood income for me too, and the other incomes don't show at all for trickleing. It's setup in a way where you'd think what you select would cause a trickle, but it's only showing up in Food and Wood, and only seems to be working for food, albiet the wrong wording =)